17^ Dr Graham's Descripti(m of New or Rare Plants. 



It is not difficult, indeed, to contrive that an instrument 

 shall have a wide range ; but the obstruction to its motion is 

 hence increased, and its power of action is yet proportionally di- 

 minished. Accordingly, the simple barometer is esteemed now 

 by far the most accurate ; while those barometers of a complex 

 construction, but with large divisions, have deservedly fallen in- 

 to disrepute. 



Queen Street, 

 imh Dec. 1827 



:•} 



Description of several New or Rare Plants which havejlowered 

 in the Royal Botajiic Garden, Edinburgh, during the last 

 three months. Communicated by Dr Graham. 



10th December 1827. 

 Buddleia madagascarensis. 



Lamarck, Encyclop. Method, vol. i. p. 513. — Tableau Encyc. et Method, 

 vol. L p. 291. t. 69. fig. 3. 



B. madagascarensis ; ramis sub-tetragonis, tomentosis ; foliis integerrimis, 

 ovato-lanceolatis, petiolatis, supra nudiusculis, venoso-rugosis, subtus 

 albido.tomentosis ; paniculis terminalibus, pedicellis sub-trifloris. 



Description — Shrub erect, with long, slender, diffused branches; bark 

 pale brown. Younger branches, petioles, back of the leaves, peduncles, 

 pedicels, calyx, and even the outside of the corolla, though this in a 

 smaller degree, covered with dense, white, soft tomentum, which often 

 becomes partially brown. Leaves decussating, petioled, ovato-lanceolate 

 or slightly cordate at the base, acuminate, soft, on the upper side dull 

 sap-green, and sprinkled rather sparingly, especially on the young leaves, 

 with white tomentum, slightly wrinkled, reticulated, middle rib and the 

 veins prominent below, channelled above. Panicle handsome, (7 inches 

 long from its first branch to the apex,) terminal, erect, bracteate, with 

 two long opposite branches at the base, subdivided like the leading 

 stalk. Pedicels like little corymbs, generally supporting three flowers, 

 though often only one near the apex, and sometimes four below. Lower 

 braciecB below the branches at the base of the panicle, resembling small 

 leaves, the others subulate, one below each pedicel, and nearly as long as 

 it, smaller upwards, similar ones at the sides of the lateral flowers. Ca- 

 lyx small, (scarcely one-eighth of an inch long,) ovate, 4.toothed. Co- 

 rolla^ tube (three-eighths of an inch long), cylindrical, white, slightly 

 hairy within ; limb 4-cleft, perfectly naked above, segments nearly half 

 the length of the limb, blunt, linear, spreading and yellow when first 

 expanded, afterwards reflexed, revolute in their edges, and deep uniform 

 orange colour, faintly and not agreeably perfumed. Anthers 4, sessile 

 in the throat of the corolla, linear, pollen whitish. Gormen round, green- 

 ish, and with the filiform, colourless style somewhat hairy^ stigma green, 

 oblong, bilobular, subexserted. 



Our specimens of this very handsome species were several years ago sent 

 to us, with a liberality by which I often profit, and which I am always 

 happy to acknowledge, from the Royal Botanic Institution of Glasgow, 

 and introduced into it, I believe, direct from India. The tomentum, 

 by which it is so generally covered, is pure white, and could only have 



